Users Guide

Agency Compliance

Network Equipment Building Systems (NEBS) Compliance

• Use shielded cables for ports 0 - 47. You must ground the shields at both ends.

• Use only reverse airflow configurations in a NEBS-compliant installation.

• Fit the power supplies and fan modules with filter kits. You must replace the fan filters regularly.

• Use this equipment with an external, second-level 6kV lightning surge protective device (SPD) at the

AC input of the building.

• Use an SPD with the AC power connections to protect the AC power supplies from damage from

excessive power line surges.

• To comply with the GR-1089 Lightning Criteria for Equipment Interfacing with AC Power Ports, use an

SPD at the AC input of the router.

WARNING: ESD damage can occur if components are mishandled. Always wear an ESD-

preventive wrist or heel ground strap when handling the S4820T and its components.

USA Federal Communications Commission (FCC)

Statement

This equipment has been tested and found to comply with the limits for a Class A digital device, under

Part 15 of the FCC rules. These limits are designated to provide reasonable protection against harmful

interference when the equipment is operated in a commercial environment. This equipment generates,

uses, and can radiate radio frequency energy. If it is not installed and used in accordance to the

instructions, it may cause harmful interference to radio communications. Operation of this equipment in

a residential area is likely to cause harmful interference, in which case users will be required to take

whatever measures necessary to correct the interference at their own expense. Properly shielded and

grounded cables and connectors must be used in order to meet FCC emission limits. Dell Networking is

not responsible for any radio or television interference caused by using other than recommended cables

and connectors or by unauthorized changes or modifications in the equipment. Unauthorized changes or

modification could void the user’s authority to operate the equipment. This device complies with Part 15

of the FCC Rules. Operation is subject to the following two conditions:

• This device may not cause harmful interference

• This device must accept any interference received, including interference that may cause undesired

operation

Agency Compliance